lubuntu TF卡刷EMMC 失败

mediatech

在用cb_install_flash_card sdb pack 得到TF卡刷EMMC启动卡，把TF卡出入开发板的TF卡槽，开机，出打印如下出错信息
[   13.791273] EXT4-fs (mmcblk0p2): recovery complete
[   13.804046] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null)
[   13.816632] VFS: Mounted root (ext4 filesystem) on device 179:2.
[   13.829006] devtmpfs: mounted
[   13.838887] Freeing init memory: 1792K
[   13.980595] EXT4-fs (mmcblk0p2): re-mounted. Opts: data=ordered
mount: mounting none on /dev failed: Device or resource busy
mkdir: can't create directory '/dev/pts': File exists
mount: mounting none on /dev/pts failed: Device or resource busy
fdisk: can't open '/dev/mmcblk1'
[   14.144062] install.sh used greatest stack depth: 4640 bytes left

这是为何？？？